"U1 This folding knife is a bit special – it combines modern steel technology with a hundred year old, folding knife design. Mod. U1 lacks a blade lock. This means that, in many countries, it will most likely be considered as a pocket knife. The blade is instead held in place with an springsteel key, a technique which has been in use for more than 100 years and which ensures that the blade does not fold. The blade is made of laminate powder steel, our famous 3G-steel, and this guarantees edge retention beyond the ordinary." -Fallkniven Knives